1, fill in the blanks (2 points for each question, the last question 1 point)
(1)2 tons and 80 kilograms = () tons 1.25 hours = () minutes.
()km？ = 14 hectare =( )m? 15 weeks = () days
(2) 9 1 .700 million is written as (), the number after omitting1100 million is (), 12000350 is pronounced as (), and the number rewritten into ten thousand units is ().
(3) =( )? 12 = 15: () = () decimal = ().
(4)? The spring pool is full, and spring grass grows in spring. Spring people drink spring wine and spring birds make spring scenery. ? In poetry? Spring? Words account for ()% of the whole poem. Spring? Word ratio? People? Words account for ()% of the whole poem.
(5) If the goods are sold at a 15% discount, they will be sold at ()% of the original price, and the price will be reduced by ()%.
(6)2 kg is () kg, and 12 liter is () liter.
(7) A bottle of Sprite has 2.5 liters, and the volume of a cup is 200 ml, which can hold () cups, leaving () liters.
(8): 0. 15 ratio is (), and the simplified ratio is ().
(9) There are () prime numbers in10, and the largest three digits composed of these numbers are (), which is both a multiple of 3 and a multiple of 5.
(10) The difference between number A and number B is 14, the sum of the two numbers is 108, number A is (), and number B is ().
(1 1) In the right figure, if the position of the circle is (2,3), the position of the triangle is ();
If the area of the triangle is 0.5cm? The area of the circle is () cm? .
The area of (12) triangle is 6m2, and the area of parallelogram with equal base and equal height is
( )㎡。
2. Judgment (65438+ 0 point for each question)
(1) Two piles of coal are the same weight. A uses tons and B uses tons. They have the same amount of money left. ( )
(2) When a number (except 0) is divided by the false fraction, the quotient must be less than the dividend. ( )
(3) In 3: 8, the former item is added with 9, and the latter item needs to be expanded by 3 times to keep the proportion unchanged. ( )
(4)a is a natural number, and its reciprocal is. ( )
(5) The sum of two acute angles of an obtuse triangle must be less than 90? . ( )
3. Select (65438+ 0 point for each question)
(1) Xiaohua's family built a house and bought m tons of cement. It is estimated that 0.8 tons will be used every day. How many tons are left after n days? The formula is ().
a、m+0.8n B、m-0.8n C、0.8m+n D、0.8n-m
(2)2 100 is () year, and 1998 is () year.
A, leap year b, average year
(3) The original price of a pair of jeans 100 yuan. First raise the price by 10%, and then lower the price by 10%. The current price is () yuan.
a、 100 B、99 C、95 D、90
(4) Among the following four patterns, the one that is not axisymmetric is ().
A, B, C, D,
(5) Turn right triangle ABC around BC, and the volume of the cone is V, then V= ().
a、 12？ b、 16？ c、25？ d、48？
Second, basic skills.
1, the number written directly (0.5 points for each question)
6.4? 8= 3.6? = - = 16? = + - + =
57+ 143= a？ 3? b= 3.2x+x= 0.6？ 1. 1= ? 6=
What can be simplified should be simplified. (2 points for each question)
3 -( 1.8+ ) 24? ( + - ) 6.8? 6.8+6.8? 3.2
20 1 1+540? 18? 24 (3- )? (5- ) 5- -
3, solution ratio and equation (2 points per question)
4x- =8.4 5.6∶x=7∶ x-0.6x=4 =
5, column solution (2+3 points)
Divide the difference by the sum of (1). (2) What is the product of the sum of the reciprocal of10 multiplied by a number less than 2? how much is it?
6, look at the picture calculation (2+2+3 points per question)
(1) Find the area below. (2) Find the volume of the cone. (Unit: cm)
7. Observe the statistical chart on the right and fill in the blanks: (65438+ 0 point for each question)
(1) () is the most popular sport. I like it.
Volleyball is occupied. ()% of the total population.
(2) There are 63 people who like football, and the total number is ()
Some people like table tennis.
Third, comprehensive application.
1, actual operation: (3+ 1)
(1) The actual distance between Party A and Party B is 60km. How many centimeters should I draw on the map with the scale of 1∶2000000? Please draw it in the space below.
(2) A school numbers each student with 1 at the end and 2 for girls. ? 07332 1? It is said that in 2007, there were 32 students in Class Three, and the students were boys. So what? 084092? Represents ().
2, solve the problem (4 points per question)
(1) Cut the largest circle on a square paper with a circumference of 100cm. What is the area of this circle?
(2) Liping used 600 kilograms of rice to grind 420 kilograms everywhere. (3) There were 2,800 primary school students in Longquan town last year, which has decreased this year.
rice. What is the rice output of her family? It dropped by 0.5% last year. How many students are there this year?
(4) Use 180cm long iron wire to form a cuboid. (5) The ratio of boys to girls in 61class is 7: 4, boys.
Its length-width ratio is 4: 3: 2. This cuboid has more people than girls 18. How many people are there in class 6/kloc-0?
How many centimeters is the length, width and height?
(6) The price of a commodity in April decreased by 20% compared with that in March, and the price in May increased by 20% compared with that in April. Is the price in May higher or lower than that in March? What is the range of change?